/*
* Copyright 2002-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.aop.framework;
import java.io.Serializable;
import org.springframework.util.Assert;
/**
* Convenience superclass for configuration used in creating proxies,
* to ensure that all proxy creators have consistent properties.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @see AdvisedSupport
*/
public class ProxyConfig implements Serializable {
/** use serialVersionUID from Spring 1.2 for interoperability */
private static final long serialVersionUID = -8409359707199703185L;
private boolean proxyTargetClass = false;
private boolean optimize = false;
boolean opaque = false;
boolean exposeProxy = false;
private boolean frozen = false;
/**
* Set whether to proxy the target class directly, instead of just proxying
* specific interfaces. Default is "false".
* <p>Set this to "true" to force proxying for the TargetSource's exposed
* target class. If that target class is an interface, a JDK proxy will be
* created for the given interface. If that target class is any other class,
* a CGLIB proxy will be created for the given class.
* <p>Note: Depending on the configuration of the concrete proxy factory,
* the proxy-target-class behavior will also be applied if no interfaces
* have been specified (and no interface autodetection is activated).
* @see org.springframework.aop.TargetSource#getTargetClass()
*/
public void setProxyTargetClass(boolean proxyTargetClass) {
this.proxyTargetClass = proxyTargetClass;
}
/**
* Return whether to proxy the target class directly as well as any interfaces.
*/
public boolean isProxyTargetClass() {
return this.proxyTargetClass;
}
/**
* Set whether proxies should perform aggressive optimizations.
* The exact meaning of "aggressive optimizations" will differ
* between proxies, but there is usually some tradeoff.
* Default is "false".
* <p>For example, optimization will usually mean that advice changes won't
* take effect after a proxy has been created. For this reason, optimization
* is disabled by default. An optimize value of "true" may be ignored
* if other settings preclude optimization: for example, if "exposeProxy"
* is set to "true" and that's not compatible with the optimization.
*/
public void setOptimize(boolean optimize) {
this.optimize = optimize;
}
/**
* Return whether proxies should perform aggressive optimizations.
*/
public boolean isOptimize() {
return this.optimize;
}
/**
* Set whether proxies created by this configuration should be prevented
* from being cast to {@link Advised} to query proxy status.
* <p>Default is "false", meaning that any AOP proxy can be cast to
* {@link Advised}.
*/
public void setOpaque(boolean opaque) {
this.opaque = opaque;
}
/**
* Return whether proxies created by this configuration should be
* prevented from being cast to {@link Advised}.
*/
public boolean isOpaque() {
return this.opaque;
}
/**
* Set whether the proxy should be exposed by the AOP framework as a
* ThreadLocal for retrieval via the AopContext class. This is useful
* if an advised object needs to call another advised method on itself.
* (If it uses <code>this</code>, the invocation will not be advised).
* <p>Default is "false", in order to avoid unnecessary extra interception.
* This means that no guarantees are provided that AopContext access will
* work consistently within any method of the advised object.
*/
public void setExposeProxy(boolean exposeProxy) {
this.exposeProxy = exposeProxy;
}
/**
* Return whether the AOP proxy will expose the AOP proxy for
* each invocation.
*/
public boolean isExposeProxy() {
return this.exposeProxy;
}
/**
* Set whether this config should be frozen.
* <p>When a config is frozen, no advice changes can be made. This is
* useful for optimization, and useful when we don't want callers to
* be able to manipulate configuration after casting to Advised.
*/
public void setFrozen(boolean frozen) {
this.frozen = frozen;
}
/**
* Return whether the config is frozen, and no advice changes can be made.
*/
public boolean isFrozen() {
return this.frozen;
}
/**
* Copy configuration from the other config object.
* @param other object to copy configuration from
*/
public void copyFrom(ProxyConfig other) {
Assert.notNull(other, "Other ProxyConfig object must not be null");
this.proxyTargetClass = other.proxyTargetClass;
this.optimize = other.optimize;
this.exposeProxy = other.exposeProxy;
this.frozen = other.frozen;
this.opaque = other.opaque;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("proxyTargetClass=").append(this.proxyTargetClass).append("; ");
sb.append("optimize=").append(this.optimize).append("; ");
sb.append("opaque=").append(this.opaque).append("; ");
sb.append("exposeProxy=").append(this.exposeProxy).append("; ");
sb.append("frozen=").append(this.frozen);
return sb.toString();
}
}
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